# Set the default Go version as a build argument
ARG XGO="go-1.21.x"

# Use xgo (a Go cross-compiler tool) as build image
FROM --platform=$BUILDPLATFORM techknowlogick/xgo:${XGO} as build

# Set the working directory and copy the source code
WORKDIR /go/src/codeberg.org/codeberg/pages
COPY . /go/src/codeberg.org/codeberg/pages

# Set the target architecture (can be set using --build-arg), buildx set it automatically
ARG TARGETOS TARGETARCH

# Build the binary using xgo
RUN --mount=type=cache,target=/root/.cache/go-build \
    --mount=type=cache,target=/go/pkg \
    GOOS=${TARGETOS} GOARCH=${TARGETARCH} CGO_ENABLED=1 \
    xgo -x -v --targets=${TARGETOS}/${TARGETARCH} -tags='sqlite sqlite_unlock_notify netgo' -ldflags='-s -w -extldflags "-static" -linkmode external' -out pages .

# Use a scratch image as the base image for the final container,
# which will contain only the built binary and the CA certificates
FROM scratch

# Copy the built binary and the CA certificates from the build container to the final container
COPY --from=build /go/src/codeberg.org/codeberg/pages/ /pages
COPY --from=build \
    /etc/ssl/certs/ca-certificates.crt \
    /etc/ssl/certs/ca-certificates.crt

# Expose ports 80 and 443 for the built binary to listen on
EXPOSE 80/tcp
EXPOSE 443/tcp

# Set the entrypoint for the container to the built binary
ENTRYPOINT ["/pages"]